The hardness of a mineral is determined by Choose one: A. its ability to form cleavage planes. B. its ability to resist breaking when being struck with a hammer. C. its ability to resist chemical reactions with other substances. D. its ability to resist being scratched by other substances.

D. its ability to resist being scratched by other substances.

Explanation

The degree of hardness in the mineral can be determined by the difficulty of minerals scratching each other or the use of a tool that can penetrate.minerals are very unique which makes it hard to scratch then,the process of scratching is not an easy one because it involves the ability of the mineral to break the bonds that are within it.

answer; the best answer is (demand);

well, paralell is parallel. i am providing links to .

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a series circuit is one with all the loads in a row. there is only one path for the electricity to flow. if this circuit was a string of light bulbs, and one blew out, the remaining bulbs would turn off.

unlike in series circuits, a charge in a parallel circuit encounters a single voltage drop during its path through the external circuit. the current through a given branch can be predicted using the ohm's law equation and the voltage drop across the resistor and the resistance of the resistor.

a parallel circuit has certain characteristics and basic rules: a parallel circuit has two or more paths for current to flow through. voltage is the same across each component of the parallel circuit.